Siamese cable consists of two cables: 95 % copper braided RG59U video cable and 2 conductor 18 gauge electrical cable all in one PVC jacketed cable. This type cable is great for use with CCTV equipment. All the wires you need to connect your camera are with in one cable. Therefore eliminating the need for two separate cables for the power and video. This cable is easy to run and it will look more esthetic when the installation is complete. It will also save you a considerable amount of time during installation